I just purchased the Asus/AMD parts for a new build to unlock and overclock to get a bit of power from the CPU, i.e., 24/7 stable OC. I'm neither particularly interested in benchmarking results or looking to break records.

I only tested them (on top of the motherboard's cardboard box) to unlock the cores and for their stability. I never tried to overclock.

Seeing this Intel/Gigabyte bundle on sale I am tempted to upgrade and sell the old parts because Intel is better performing.

The new bundle seems to meet my needs, except it has Intel HD graphics which should be able to run 1080p videos.

It sounds like you are using onboard video?? It would probably be a lot cheaper to just buy a low end video card... rather than upgrade your entire system just to get your hands on the Intel HD 3000, which btw is maybe bareky better than the onboard HD4250 on your AMD board. This is because the HD4250 has access to the 128MB of onboard cache memory that really gives it an extra umph.

So if you want to upgrade, go for it, nobody here is going to stop you, lol. But im having a a hard time seeing a reason why.

Back in November I upgraded from an ASUS/AMD Phenom II X4 955BE build to an MSI/Intel Core i5-2500K build. I was pretty impressed with the performance difference between the Intel and AMD. I play a lot of games, mostly FPS like MW3, as well as watch a lot of movies simultaneously on my second monitor. The Alt-Tabbing between game and movie/browser/IM'ing was seamless on the Intel build where the AMD build would get held up. I just sold my Intel rig because I was actually able to turn a profit on it, but I am definitely going to stick with Intel for the foreseeable future. I am temporarily using my brothers machine, which is a clone of my old AMD P2X4955BE build (identical hardware) and I am already missing my Intel rig.

TL/DR: If you can sell the AMD hardware and break even/not loose your pants I would definitely recommend it. Even though you're not gaming on it, the Intel machine is superior. However, I really don't think you would be THAT upset with yourself if you stuck with the AMD rig. It's more than capable of handling what you're throwing at it. I personally look for any excuse to build a new machine and a good deal on a better piece of hardware is a good excuse. lol